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Stitch Fix wants to do your shopping in one shot.

Everybody knows that moms have clout. Marketers will rattle off numbers of percentages of household purchases the Mom-in-Chief makes, the trillion dollar "mommy market" and the overall power of the purse.

And when it comes to moving moms to market, nobody has more muscle than a mommyblogger: the four million high-powered brand ambassadors who chronicle their parenting, housekeeping and style choices online.

While for most of us this trend data is just that—a trend--Stitch Fix founder Katrina Lake has ridden the wave of the mommy blogger straight to success. She credits the influential online network with driving women to her service, an algorithm-driven personal shopping service where users fill out a style profile and receive a package (called a “fix”) each month. Customers can buy (and pay for) or not buy (and return free of cost) and can schedule boxes as frequently as they want. Lake raised a $4.75 M Series A in February co-led by Baseline and Lightspeed Ventures.

For moms, particularly in fashion-desert flyover states, they want them—bad, it seems. And all the time. “We’ve experienced a year of crazy growth,” Lake says. “And the blogging is a big win, for us but also for the bloggers.” Anecdotally, she says, blog posts that are about a Stitch Fix have much more engagement than blog posts that don’t. That is, a post featuring a blogger trying on different pieces of clothing and polling her readers on what she should keep and send back generates more comments than one, say, about arts and crafts with the kids. That bloggers are looking to up their interactions and engagement is without question, so we’ll take Lake at her (anecdotal) word.

As for the crazy growth Stitch Fix brags, Lake says that when you look at what she’s experienced in the past year (she won’t talk numbers but says she shipped over 10,000 fixes in March and that Q3 2013 revenue will be 2.5 times what it was in 2012), yea-over-year topline revenues, “We'll grow at a faster rate this year than Zappos, Gilt [or] Diapers.com ever did in a single year.” Impressive bars this young founder has set for herself.

But Lake seems undaunted. Now two years old, she says the company is uniquely positioned to capitalize on the data it’s collected from its users as it opens the service to the public (it’s operated with a wait list for more than a year). When customers return a piece of clothing to Stitch Fix, they’re asked to give feedback on what they didn’t like about it, why it didn’t work for their body, etc. “We get great feedback on every piece on fit, size and style,” Lake says. And the data sharing, like the Stitch Fix-blogger relationship, is a win-win. Feedback goes into an increasingly fine-tuned algorithm, which means better pieces for the customer—and better purchase rates for Stitch Fix.

Here’s how it works: you fill out a photo-driven online survey, and allow Stitch Fix access to your social feeds for a peek into your day-to-day lifestyle. After the algorithm takes a first pass at what items you might like, Lake says, one of several staff stylists fine tunes each “fix.” There the social glimpse, in particular Pinterest, is crucial. “You might think you’re not preppy,” Lake says. “But if you’re pinning chevron and polka dots they stylist can make their own judgment of your preferences. They’re scary good.”

Hate it? Stitch Fix wants to know so no one else does.

But while stylists play a part, it’s the algorithm that’s key to Lake’s bottom line. “We want to establish ourselves as leaders in operations, sure,” she says. “But even more on the data and analytics side. Because of our predictive technology, our model of retail is very profitable.” She won’t say how profitable, but says knowing what customers will respond to based on style, size, body type and even location allows her to be accurate with inventory in a way brick and mortar and even online stores aren’t able to. “Brick and mortar stores will ultimately mark down between 50 to 60% of its merchandise because they don’t know who’s walking in the door on any day, so they lose control.”

Stitch Fix, she says, sells 90% of its inventory at full price (there is a twice-yearly sale to sell any extra inventory at clearance pricing). “It’s just a more efficient model for retailing,” she says. “Without two years worth of data behind us it would be a lot harder to say that, but we have it. So we have a lot more control over inventory coming in and going out. Big e-retailers like Amazon might have a lot of data, but they’re missing context. With our feedback loop, we’ve found the right marriage of both of those pieces.”